Conusphaera mexicana minor

Bralower et al., 1989 Jan 29, 2026

Set number: 2951

  • Conusphaera mexicana minor 33261 1
  • Conusphaera mexicana minor 33259 2
  • Conusphaera mexicana minor 33264 3
  • Conusphaera mexicana minor 33266 4
  • Conusphaera mexicana minor 33262 5
  • Conusphaera mexicana minor 33260 6
  • Conusphaera mexicana minor 33263 7
  • Conusphaera mexicana minor 33265 8
    10µm
Conusphaera mexicana minor, Early Tithonian, DSDP Leg 76, Site 534, Blake-Bahama Basin, Atlantic Ocean

Set number: 2950

  • Conusphaera mexicana minor 26260 1
  • Conusphaera mexicana minor 26257 2
  • Conusphaera mexicana minor 26261 3
  • Conusphaera mexicana minor 26259 4
  • Conusphaera mexicana minor 26258 5
  • Conusphaera mexicana minor 26262 6
    10µm
Conusphaera mexicana minor, Late Tithonian, DSDP Leg 76, Site 534, Blake-Bahama Basin, Atlantic Ocean

Set number: 2949

  • Conusphaera mexicana minor 1384 1
  • Conusphaera mexicana minor 1383 2
    10µm
Conusphaera mexicana minor, Late Tithonian, Mississippi Canyon, Gulf of Mexico
Final Epithet
Conusphaera mexicana minor Bralower et al., 1989
Basionym

Conusphaera mexicana minor Bralower et al., 1989

Synonyms

non Conusphaera mexicana subsp. minor Bown & Cooper, 1989

Remarks

Structural and optical characteristics are similar to Conusphaera mexicana mexicana, but this subspecies is small (< 4.0 μm).

References

Bown, P. R. & Cooper, M. K. E. 1989a. Conical nannofossils in the Mesozoic. In: Crux, J. A. & van Heck, S. E. (Eds). Nannofossils and their applications: Proceedings of the 2nd INA Conference, London 1987. British Micropalaeontological Society Publication Series. 98-106.

Bralower, T. J., Monechi, S. & Thierstein, H. R. 1989. Calcareous nannofossil zonation of the Jurassic-Cretaceous boundary interval and correlation with the geomagnetic polarity timescale. Marine Micropaleontology. 14: 153-235.

Taxonomy
Conusphaera
Biostratigraphy
  • Phanerozoic
    • Mesozoic
      • Jurassic
        • Late Jurassic
          • Malm
            • Tithonian
              • Late Tithonian
              • Early Tithonian
Stratigraphic Range
Early Tithonian - Late Tithonian
Age (Ma)
147.53 - 143.65
Holotype
Conusphaera mexicana minor 26257

Conusphaera mexicana minor Bralower et al., 1989

Tithonian

DSDP Leg 76, Site 534, Blake-Bahama Basin, Atlantic Ocean